Looking at them I was pretty sure they were "point of lay" pullets with those pretty red combs, as I'm not seeing any saddle/sickle feathers, but if they are only 2-3 months old (8-12 weeks, so hatched Nov/Dec?) then those combs are way too developed and red for pullets.
Are you sure about the age? My gut feeling looking at the pictures is still pullets but your information re age says cockerels.